KR20230056739A - Lighting devices for car headlights on single-track cars - Google Patents

Abstract

The invention relates to a lighting device (10) for vehicle headlights of single-track vehicles, for the creation of a segmented light distribution, said lighting device (10) comprising: a body (110) and projecting from the body (110); It is an optical body 100 having a plurality of photoconductors 200, and each of the photoconductors 200 includes one light incident surface 210 and one light exit surface 220, but adjacent photoconductors 200 The optical body 100, wherein the exit surfaces 220 of ) form one common exit surface 220a of the optical body 100; - a plurality of light sources 50; and - a projection optical system 300 with an optical axis A; wherein the body 110 comprises first and second light emitting halves 110a, 110b, each light emitting half 110a, 110b ) includes photoconductors 200 disposed along a straight line in at least the first row R1 and along a straight line in the second row R2, and includes the straight lines of the first and second rows R1 and R2. are disposed relative to each other by a first angular offset (W1), and the first and second light emitting halves (110a, 110b) are on the body 110 in reflection symmetry with each other about the vertical axis of symmetry (V) are placed

Description

Lighting devices for car headlights on single-track cars

The invention relates to a lighting device for motor vehicle headlights of a single-track motor vehicle, for generating a segmented light distribution, said lighting device comprising:

- an optical body with a body and a plurality of light conducting bodies protruding from the body, for forming a definable segmented light distribution from the light of the light sources, each of the light conducting bodies being light from the light sources one light incident surface where light can be input into each photoconductor, and one exit surface where light that can be input into each photoconductor is emitted therefrom, wherein the exit surfaces of adjacent photoconductors are one of optical bodies. To form a common exit surface of the optical body;

- a plurality of light sources, wherein at least one light source is assigned to each one entrance face of one light conductor; and

- a projection optical system having an optical axis and configured to map light emitted from a common exit surface to the front of the lighting device in a direction of a main radial direction;

The invention also relates to a motor vehicle headlight comprising at least one lighting device according to the invention.

In order to improve the illumination of the driver's field of vision in cornering positions of a single-track vehicle, eg a motorcycle, additional light segments must be connected according to the respective cornering position.

In the prior art, this has conventionally been realized by means of additional reflectors and/or light modules.

However, the additional modules require a lot of mounting space, and besides, the additional modules have to be previously coordinated with each other, which means additional costs.

An object of the present invention is to provide an improved lighting device.

The problem is that the body comprises first and second light-emission halves, each light-emission half extending along a straight line in at least a first row and a straight line in a second row. wherein the first and second rows of straight lines are disposed relative to each other by a first angular offset, and the first light-emitting half and the second light-emitting half reflect each other about a vertical axis of symmetry. It is solved by being symmetrically arranged on the body.

In this case, each row includes at least two light conductors arranged along corresponding straight lines. Further, straight lines extend transversely to the main radial direction starting from the axis of vertical symmetry.

Also, each row can contribute to the creation of one light segment within the segment light distribution, while the light segments that can be created through the corresponding row can be blocked and connected.

Also, each light conductor can contribute to the generation of light segments within the segment light distribution, while the light segments that can be created through the corresponding light conductors can be blocked and connected.

In addition, the exit surfaces of adjacent photoconductors within one column can directly adjoin each other, so that there is no gap between the exit surfaces.

Also, the exit faces of adjacent photoconductors of different rows can directly adjoin each other, so that there is no gap between the exit faces.

In addition, the exit surfaces of the photoconductors in one row may become larger and larger in the transverse direction to the main radiation direction starting from the vertical axis of symmetry.

Also, the incident surfaces of the light conductors may be arranged in one common vertical plane, the vertical plane being orthogonal to the optical axis of the projection optical system.

Also, the light sources may be formed as light emitting diodes.

Also, the light emitting diodes can be controlled independently of each other.

Also, the common exit surface of the optical body may be formed to be curved.

Also, the projection optical system may include a curved focal plane, wherein the common exit plane of the optical body is disposed within the focal plane of the projection optical system, and the common exit plane conforms to at least a portion of the curvature of the focal plane of the projection optical system. In this case, the exit plane in particular obeys the curvature in the central angular region of the focal plane, that is to say the curvature in the region close to the optical axis of the projection optical system.

In addition, each photoconductor may include side wall portions extending from an entrance face to an exit face, each exit face being defined by two narrow side surfaces and two longitudinal side surfaces, and at least one side surface of the photo conductor. , wherein the side surfaces orthogonal to a direction transverse to the main radiation direction are formed curved, and the side surfaces of the photoconductor directed toward the axis of vertical symmetry are formed convex, and directed in a direction opposite to the axis of vertical symmetry. The side surface of is formed concavely.

Additionally, each row may include one outermost light conductor and at least one inner light conductor disposed spaced apart from the axis of vertical symmetry, wherein at least one inner light conductor of each row includes curved side surfaces.

Thereby, the geometry of the Petzval surface of the projection lens is canceled out, and the preferred light distribution radially outward from the center of the light distribution along the oblique shading boundary of the segments and along the oblique shading boundary at the cornering position. An intensity profile is achieved.

Further, the optical body may include at least one row having at least two light conductors in a region where the two light emitting halves meet each other at the axis of vertical symmetry, the row being disposed orthogonally to the axis of vertical symmetry. Arranged along a straight line, preferably the optical body comprises two rows.

Thereby, when the segment light distribution is provided as the high beam light distribution, light can reach the fore-field even in the high beam mode, and the luminance minimum can be avoided.

Additionally, the entrance faces of each photoconductor may have a parallel offset with respect to the corresponding exit face, such that the centroids of an area of the exit face and associated face of entry have an offset when viewed in the main radial direction. will show

This measure is likewise used to displace the light center in the direction of the center of the light distribution, in order to create a homogeneous (constant) light distribution with a maximum at the center.

In addition, the lighting device of the present application may include a control unit and at least one roll angle sensor, wherein the roll angle sensor is a deviation of the actual position from a defined standard position of the lighting device around the main radial direction. and the control unit is configured to receive the roll angle from the at least one roll angle sensor and to switch on and/or off individual rows of light conductors depending on the roll angle.

Further, when detecting the first roll angle, the control unit is configured to activate or switch on the first row of the first or second light emitting halves of the optical body, and when detecting the second roll angle, the control unit is configured to activate or switch on the first and second rows of the first or second light emitting halves of the optics.

Further, the optical body may include a third row of light conductors, the third row having a second angular offset relative to the first row and being symmetrically disposed about a vertical axis of symmetry, and wherein the optical body may include a third row of light conductors. It may include four columns, the fourth column having a third angular offset relative to the first column and being symmetrically disposed about the vertical axis of symmetry.

Further, upon detecting the third roll angle, the control unit is configured to activate or switch on the first, second and third rows of the first or second light emitting halves of the optical body, and set the fourth roll angle. Upon detection, the control unit is configured to activate or switch on the first, second, third and fourth rows of the first or second light emitting halves of the optics.

In addition, the first roll angle may be in the range of 5 ° to 7 °, the second roll angle may be in the range of 7 ° to 17 °, and the third roll angle may be in the range of 17 ° to 27 °, The fourth roll angle may exceed 27°.

It should be noted here that the above-mentioned angle specifications are to be understood as absolute values and also include negative angles, i.e. the specified range of roll angles is the same in the cornering position not only in the right direction but also in the left direction. that is to be understood as such.

Also, the segment light distribution may be a segment high beam light distribution.

The problem of the present invention is equally solved by means of a motor vehicle headlight comprising at least one lighting device according to the invention.

In the following, the invention is explained in more detail on the basis of exemplary drawings.

1 is a diagram illustrating an example lighting device including an optical body and a projection optical system connected downstream.
FIG. 2 is a top view of an optical body of the lighting device of FIG. 1 viewed from above.
FIG. 3 is a rear view of the optical body of FIG. 2 with light conductors arranged in rows having an angular offset from each other, viewed from the rear; FIG.
3A is a rear view of another exemplary optical body viewed from the rear.
4A is a diagram illustrating an example light distribution when a first row of photoconductors is switched on.
4B is a diagram illustrating an example light distribution when the first and second columns of photoconductors are switched on.
4C is a diagram showing an example light distribution when the first, second and third columns of photoconductors are switched on.
4D is a diagram illustrating an example light distribution when the first, second, third and fourth columns of photoconductors are switched on.

1 shows an exemplary lighting device 10 for a vehicle headlight of a single track vehicle, eg a motorcycle, for generating a segmented light distribution, wherein the lighting device 10 is configured to generate a segmented light distribution from light from light sources 50. It includes an optical body 100 having a main body 110 and a plurality of light conductors 200 protruding from the main body 110 to form a definable segment light distribution.

The photo conductors 200 each have one light incident surface 210 from which light from the light sources 50 can be input therein, and light that can be input into each photo conductor 200 exits therefrom. However, the exit surfaces 220 of adjacent photoconductors 200 form one common exit surface 220a of the optical body 100 formed by being curved.

In addition, the lighting device 10 includes a plurality of light sources 50, and at least one light source is assigned to one incident surface 210 of one light conductor 200, respectively, and the lighting device 10 has an optical axis. It further includes one projection optical system 300 having (A), wherein the projection optical system 300 directs the light emitted from the common exit surface 220a in the direction of the main radiation direction X to the lighting device 10. ) is configured to be mapped in front of.

In addition, the projection optical system 300 includes a curved focal plane, the common exit plane 220a of the optical body 100 is disposed within the focal plane of the projection optical system 300, and the common exit plane 220a is the projection optical system. According to the curvature of the focal plane of (300).

Body 110 includes first and second light emitting halves 110a, 110b, wherein first light emitting half 110a includes photoconductors 200, which photoconductors are arranged in a first row R1. along straight line G1 within, along straight line G2 within second column R2, along straight line G3 within third column R3, and along straight line G4 within fourth column R4. The straight lines of the first and second columns R1 and R2 are relatively disposed with each other by a first angular offset W1, and the straight lines of the first and third columns R1 and R3 are disposed relative to each other by a first angular offset W1, and the straight lines of the first and third columns R1 and R3 are mutually disposed with each other by a second angle offset W1. having an angular offset W2, the straight lines of the first and fourth rows R1 and R4 having a third angular offset W3 from each other, and the first and second light emitting halves 110a, 110b They are arranged on the main body 110 in reflection symmetry with each other about the vertical axis of symmetry (V). In this case, the second light emitting half 110b likewise includes four rows R1', R2', R3', R4', which likewise correspond to each other like the rows of the first light emitting half 110a. holds an angular offset to

In this regard, in FIGS. 2 and 3 , the exit surfaces 220 of the photoconductors 200 of one row (R1, R1', R2, R2', R3, R3', R4, R4') are the vertical axis of symmetry. It can be seen that starting from (V), it increases more and more in the transverse direction with respect to the main radial direction (X).

In addition, the incident surfaces 210 of the photoconductors 200 are disposed on one common vertical plane, and the vertical plane is disposed orthogonal to the optical axis A of the projection optical system 300 .

As is similarly confirmed in FIGS. 2 and 3 , each photoconductor 200 includes sidewall portions extending from the incident surface 210 to the exit surface 220, but the exit surface 220 each has two narrow sidewalls. and two longitudinal side surfaces, the side surfaces of the at least one light conductor 200 being orthogonal to a direction transverse to the main radial direction X, the side surfaces being curved and formed with an axis of vertical symmetry The side surface 230a of the photoconductor 200 directed towards (V) is formed convexly, and the side surface 230b of the photoconductor 200 directed in the direction opposite to the vertical axis of symmetry V is formed concavely. .

In addition, each of the columns (R1, R1', R2, R2', R3, R3', R4, R4') has one outermost photoconductor and at least one inner photoconductor disposed apart from the vertical axis of symmetry (V). wherein at least one inner light conductor of each row (R1, R1', R2, R2', R3, R3', R4, R4') includes curved side surfaces.

In addition, the entrance faces 210 of each photoconductor 200 have a parallel offset with respect to the corresponding exit face 220, such that the area centroid of the exit face 220 and the relative ratio of the exit face 210 The area centroid will represent an offset when viewed in the main radial direction (X), as seen in FIGS. 2 and 3 .

Furthermore, the lighting device 10 comprises a control unit and at least one roll angle sensor, said roll angle sensor having an actual position from a defined standard position of the lighting device 10 around the main radial direction X. and the control unit receives the roll angle from the at least one roll angle sensor and, depending on the roll angle, the individual rows R1, R1', R2, R2' of the light conductors 200. , R3, R3', R4, R4') on and/or off.

3, another example of the optical body 100 is shown, but the optical body 100 is provided with at least two light conductors in a region where two light emitting halves meet each other at a vertical axis of symmetry V. It includes two columns 400, the columns 400 being disposed along a straight line that is orthogonal to a vertical axis of symmetry V. The foregoing also applies suitably to the embodiment of FIG. 3A.

Figures 4a, 4b, 4c and 4d show example light distributions, in which case a single track vehicle, such as a motorcycle, is positioned in a left position or on a left curve, and emits a first light according to each roll angle. The individual rows of half 110a are additionally switched on. It should be noted here that the references are also borrowed for the corresponding right position or right curve.

Upon detecting the first roll angle, the control unit is configured to activate or switch on the first row R1 of the first or second light emitting halves 110a, 110b of the optics 100, as shown in FIG. 4A , and upon detecting the second roll angle, the control unit activates the first and second rows R1 , R2 of the first or second light emitting halves 110a , 110b of the optical body 100 . or configured to control, which is confirmed in FIG. 4B.

Also, when detecting the third roll angle, the control unit determines the first, second and third rows R1, R2 and R3 of the first or second light emitting halves 110a, 110b of the optical body 100. is configured to activate or switch on, as shown in FIG. 4c , and upon detecting the fourth roll angle, the control unit controls the rotation of the first or second light emitting half 110a , 110b of the optics 100 . configured to activate or switch on the first, second, third and fourth columns R1, R2, R3, R4, as seen in FIG. 4d.

In this case, the first roll angle ranges from 5° to 7°, the second roll angle ranges from 7° to 17°, the third roll angle ranges from 17° to 27°, and the fourth roll angle ranges from 7° to 17°. It is a range exceeding 27°.

10: lighting device
50: light source
100: optical body
110: body
110a: first light emitting half
110b: second light emitting half
200: photoconductor
210: entrance plane
220: exit surface
220a: common exit surface
300: projection optical system
A: optical axis
X: main radial direction
V: axis of vertical symmetry
W1, W2, W3: angle offset
Rows: R1, R2, R3, R4, 400
Straight: G1, G2, G3, G4

Claims (15)

A lighting device (10) for a vehicle headlight of a single-track vehicle, for generating a segmented light distribution, the lighting device (10) comprising:
- an optical body (100) having a body (110) and a plurality of light conductors (200) protruding from the body (110), for forming a definable segmented light distribution from light from light sources (50); The conductors 200 each have one light incident surface 210 from which light of the light sources 50 can be input therein, and one from which light that can be input into each photo conductor 200 exits therefrom. The optical body 100 including an exit surface 220 of, and the exit surfaces 220 of adjacent photoconductors 200 form one common exit surface 220a of the optical body 100;
- a plurality of light sources (50), wherein at least one light source is assigned to each one entrance face (210) of one light conductor (200); and
- a projection optical system 300 having an optical axis A, which is configured to map the light emitted from the common exit surface 220a in the direction of the main radial direction X to the front of the lighting device 10; (300); In the lighting device for the automobile headlight, which includes,
The body 110 includes first and second light emitting halves 110a, 110b, each light emitting half 110a, 110b along a straight line within at least a first row R1 and a second It includes light conductors 200 disposed along a straight line in a column R2, wherein the straight lines of the first and second columns R1 and R2 are disposed relative to each other by a first angular offset W1, And the first light emitting half (110a) and the second light emitting half (110b) are disposed on the main body (110) in reflection symmetry with each other about a vertical axis of symmetry (V). lighting device. The lighting device for automobile headlights according to claim 1, characterized in that the exit surfaces (220) of the light conductors (200) of one row (R1, R2) are larger starting from the vertical axis of symmetry (V). The method of claim 1 or 2, wherein the incident surfaces (210) of the light conductors (200) are arranged in one common vertical plane, and the vertical plane is orthogonal to the optical axis (A) of the projection optical system (300). A lighting device for automobile headlights, characterized in that disposed by being disposed. The lighting device for automobile headlights according to any one of claims 1 to 3, characterized in that the common exit surface (220a) of the optical body (100) is formed curved. 5. The method according to any one of claims 1 to 4, wherein the projection optical system (300) includes a curved focal plane, and the common exit surface (220a) of the optical body (100) is Disposed in the focal plane, the common exit plane (220a) conforms to at least a partial section of the curvature of the focal plane of the projection optical system (300). 6. The method according to any one of claims 1 to 5, wherein each photoconductor (200) includes side wall portions extending from the entrance face (210) to the exit face (220), and wherein the exit face (220) is defined by two narrow side surfaces and two longitudinal side surfaces respectively, the side surfaces of at least one light conductor 200 being curved and directed towards the axis of vertical symmetry V. A lighting device for automobile headlights, characterized in that a surface is formed convexly, and a side surface of the light conductor 200 directed in a direction opposite to the axis of vertical symmetry (V) is formed concavely. 7. The method of claim 6, wherein each row (R1 R2) includes one outermost photoconductor and at least one inner photoconductor disposed spaced apart from the vertical axis of symmetry (V), wherein each row (R1, R2) The lighting device for a vehicle headlight according to claim 1 , wherein said at least one inner light conductor comprises curved side surfaces. 8. The optical body according to any one of claims 1 to 7, wherein the optical body includes at least one row (400) having at least two light conductors in a region where the two light emitting halves meet each other at a vertical axis of symmetry (V). ), wherein the row 400 is arranged along a straight line arranged orthogonally to the axis of vertical symmetry V, and preferably the optical body comprises two rows 400. Lighting devices for headlights. 9. The method according to any preceding claim, wherein the entrance faces (210) of each photoconductor (200) have a parallel offset with respect to the corresponding exit face (220), whereby said exit face (220) ) and the area centroids of the associated entrance face (210) exhibit an offset when viewed in the main radial direction (X). 10. The method according to any one of claims 1 to 9, wherein the lighting device (10) comprises a control unit and at least one roll angle sensor, the roll angle sensor centered around the main radial direction (X). configured to measure a roll angle of a deviation of an actual position of the lighting device 10 from a defined standard position, wherein the control unit receives a roll angle from the at least one roll angle sensor and, in accordance with the roll angle, the light conductor A lighting device for automobile headlights, characterized in that it is configured to switch on and/or off individual rows (R1, R2) of (200). 11. The method of claim 10, wherein when detecting the first roll angle, the control unit activates or switches the first row (R1) of the first or second light emitting halves (110a, 110b) of the optical body (100). configured to turn on, and when detecting a second roll angle, the control unit is configured to turn on the first and second rows R1, R2 of the first or second light emitting halves 110a, 110b of the optical body 100. ) A lighting device for automobile headlights, characterized in that configured to activate or switch on. 12. The optical body (100) according to any preceding claim, wherein the optical body (100) comprises a third row (R3) of light conductors (200), the third row being adjacent to the first row (R1). has a second angular offset with respect to and is symmetrically disposed about a vertical symmetry axis V, and the optical body 100 includes a fourth row R4 of light conductors, the fourth row comprising the first A lighting device for automobile headlights, characterized in that it has a third angular offset with respect to the column (R1) and is symmetrically arranged about a vertical axis of symmetry (V). 13. The method of claim 12, wherein when detecting the third roll angle, the control unit (110a, 110b) of the first or second light emitting half (110a, 110b) of the optical body (100) R1 , R2 , R3 ), and when detecting a fourth roll angle, the control unit of the first or second light emitting half 110a , 110b of the optical body 100 A lighting device for automobile headlights, characterized in that it is configured to activate or switch on the first, second, third and fourth rows (R1, R2, R3, R4). 14. The lighting device for automobile headlights according to any one of claims 1 to 13, wherein the segment light distribution is a segment high beam light distribution or a low beam light distribution. 15. A motor vehicle headlight comprising at least one lighting device (10) according to any one of claims 1 to 14.

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